miniature limit switch


Micro Switch Expert by Your Side!

Unionwell is an integrated manufacturer specialising in the R&D, production and sales of micro switches with over 30 years of industry experience. With over 200 patents registered, the production and testing process is over 90% automated. With IATF6949, ISO9001, ISO14001 certificates and global safety certificates UL cUL, ENEC, CE, ATEX and CQC, Unionwell is the preferred choice for ODM/OEM solutions for many well-known automotive manufacturers around the world.

Choosing Cost Effective Automotive Micro switches

Unionwell micro switches are widely used in automobiles and EV, such as windows, doors, sun visors, charging piles, charging guns, seatbelt detection, etc. They have an irreplaceable position in enhancing performance and safety.

Unionwell's G3/G9 sealed waterproof switches are the most commonly used in the automotive industry due to their small size, compact design and IP67 or even IP68 waterproof and dustproof rating.

5 Reasons to Choose Unionwell Micro Switches for Automotive Systems

Rapid Response

The 130gf ultra-light operating force ensures near-instantaneous actuation, critical for automotive safety systems like airbag triggers, brake sensors, and door locks.

Customizable

With a wide range of levers and terminals to choose from, the micro switch can be adapted to different mounting environments while fitting easily into tight automotive assemblies.

Vibration Resistance

Withstands 10–55Hz vibration (0.75mm amplitude), perfect for engine compartments or off-road vehicles.

Humidity Resilience

85% RH tolerance protects against moisture in wiper systems or EV charging ports.

Extended Lifespan

500,000 mechanical cycles and 100,000+ electrical cycles minimize replacements, lowering total ownership costs.

ISO9001

ISO14001

ISO5001

IATF16949

ISO45001

Specialized and New Certificate

High-tech Enterprise Certificate

Provincial Engineering Center Enterprise

Ecovadis

UL Witness Laboratory

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